wpo - My Meade ETX-70AT with Autostar  Solar+Star spectra

ETX-70 DeepSky... piggyback imaging... solar system... accessories... webcam

GALAXIES....OPEN+GLOBULARS....PNE+DIFFUSE NEB....QUASARS....NOVA+SNE....VARIABLES....SOLAR+STELLAR SPECTRA

I've acquired the diminutive Meade 70mm aperture f/5 refractor with goto pointing and am enjoying the experience. These images show the amazing stellar penetration and detail possible from such a small telescope aided by sensitive superfast download USB2 Starlight Xpress HX516 and MX916 monochrome CCD cameras. Typically NO FILTERS are used and recently the ETX-70 has been piggybacked on my LX200 for better tracking. These images are a record of my progress over recent months.

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LO-RES STELLAR SPECTRA: using a Rainbow Optics grating immediately before the CCD like a regular filter - stars shown as spectrum profiles.

GRATING+CCD STELLAR SPECTRA

moon via Rainbow+DSI saturn methane via Rainbow+DSI starmix via Rainbow+DSI RLeo via Rainbow+DSI

n3242 [hyd] pne spectra

m42 spectra rt+bk ori spectra R Lep spectra mira=o ceti spectra

STELLAR SPECTRA STELLAR SPECTRA

HI-RES SOLAR SPECTRA+PRECISON GRATING: converts the ETX-70 OTA into a powerful spectrograph as these sample solar spectra.

GRATING+CCD GRATING+CCD SAMPLE SPECTRA SAMPLE SPECTRA SAMPLE SPECTRA SCHEMATIC

text & images copyright Maurice Gavin - May 2007 Visitor Counter by Digits